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  #1  
Old 01-15-2006, 12:33 PM
HankL HankL is offline
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Default 5.7 Hemi inlet/exhaust port cc's ?

I did a search and did not find any info,
does anyone know for the factory spec
5.7 Hemi ?

inlet port cc
inlet port length

exhaust port cc
exhaust port length

combustion chamber cc

cc of reverse dome in piston crown

quench clearance
from piston top outer ring to cyl head flatspot

weblinks to flowbench numbers for factory stock 5.7 cylinder heads

Any help appreciated
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  #2  
Old 01-15-2006, 06:08 PM
party340 party340 is offline
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I think they flow around 260 on the intake stock. Try the KRC website.
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  #3  
Old 01-17-2006, 01:50 PM
HankL HankL is offline
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Tried KRC and Hughes - plenty of smallblock cyl head flows but no 5.7 Hemi.

Anyone seem weblinks to 5.7 or 6.1 Hemi cylinder head flows?
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  #4  
Old 01-17-2006, 02:04 PM
HankL HankL is offline
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from some deeper Google searching:

quote:
Published hemi heads 2.00 int 1.55 exh @ 28"
You can see that the exhuast is where time needs to be spent

int exh w/o pipe
.100 74 52

.200 144 111

.300 210 146

.400 251 160

.500 265 164

.600 267 166

stock
65 cfm @.100 lift 28"
144 @ .200
214 @ .300
250 @ .400
262 @ .500
265 @ .600
268 @ .700
269 @ .800

Mild port similar to a stage 1
68cfm @ .100 lift 28"
144 @ .200
222 @ .300
270 @ .400
293 @ .500
300 @ .600
304 @ .700
310 @ .800

The hemi head is good, and once they crack the PCM, they are going to be tuff to compete with.
end quote
-----
link at
http://www.ls1gto.com/forums/printthread.php?t=32427
about three quarter way down the threads

-----
also some highly technical but interesting porting and flow discussion:
http://www.eng-tips.com/viewthread.cfm?qid=92513&page=5
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  #5  
Old 01-17-2006, 02:14 PM
HankL HankL is offline
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from another shop:

quote
I can get to the shop tomorrow and get some more numbers off the heads for you. So far all I have here at home are our stock flow numbers.

Test Pressure: 28" H2O

Intake/Stock 2.00

Lift .100 .200 .300 .400 .500 .600 .700
CFM 71 159 227 259 268 270 271

Exhaust/Stock 1.55

Lift .100 .200 .300 .400 .500 .600 .700
CFM 53 113 142 173 179 180 181

endquote
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  #6  
Old 01-17-2006, 08:02 PM
party340 party340 is offline
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The 2006 charger forums have some info on those heads also.
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  #7  
Old 01-22-2006, 08:46 AM
HankL HankL is offline
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http://www.mopar1.us/headflow.html

a very large table of cylinder head flows at 28"
all makes, not just Mopar
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